hardmouthed

[ hahrd-mouth d, -moutht ]

/ ˈhɑrdˌmaʊðd, -ˌmaʊθt /

of or relating to a horse not sensitive to the pressure of a bit.

stubborn; obstinate; self-willed.

Origin of hardmouthed

First recorded in 1610–20; hard + mouth + -ed³

The face was big-jawed and hard-mouthed, and there was scar tissue in the eyebrows and on the cheeks.

Nor Iron Bars a Cage.... |Gordon Randall Garrett
Now notice Mrs. Y., who is attempting to turn her hard-mouthed racker.

The American Horsewoman |Elizabeth Karr
But he was hard-mouthed, and stiff-necked and hell-bent on having his own way about things.

I Married a Ranger |Dama Margaret Smith
Few know the difficulty of bridling the imagination, and reining back a hard-mouthed pen.

Thackerayana |William Makepeace Thackeray

She was hard-mouthed and indignant, which, after all, was but natural.

The Golden Face |William Le Queux

hard-mouthed

(of a horse) not responding satisfactorily to a pull on the bit

stubborn; obstinate